A radio frequency heated gas cutting gun

Abstract

The present invention discloses a radio frequency heating gas cutting gun, comprising: a structure having a gas channel and an oxygen channel inside, and a cutting nozzle installed on the structure and connected to the gas channel and the oxygen channel, wherein: an inductive coupling coil that can be connected to a radio frequency power supply is arranged on the outside of the structure, and the inductive coupling coil comprises a tube body made of conductive material and wound around the outer periphery of the structure, one end of the tube body is connected to the gas channel, and the other end thereof is used to connect to a gas source to form a gas inlet. The present invention can greatly increase the cutting temperature, speed up the cutting speed, and improve the work efficiency, and has a simple structure and is portable, and is particularly suitable for thick plate cutting, accident rescue, etc.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, and in particular to a radio frequency heating gas cutting gun. Background Art

[0002] Cutting guns are widely used in many fields such as construction, processing and production, accident rescue, etc. Traditional gas cutting guns have shortcomings such as uneven gas preheating and low cutting temperature, while plasma cutting guns have a complex structure and are not suitable for portable design. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a radio frequency heating gas cutting gun.

[0004] The present invention provides a radio frequency heating gas cutting gun, comprising: a structure having a gas channel and an oxygen channel inside, and a cutting nozzle installed on the structure and connected to the gas channel and the oxygen channel, wherein:

[0005] An inductive coupling coil that can be connected to a radio frequency power supply is provided on the outside of the structure. The inductive coupling coil includes a tube body made of conductive material and wound around the periphery of the structure. One end of the tube body is connected to the gas channel, and the other end is used to connect to the gas source to form a gas inlet.

[0006] Preferably, a shielding magnetic ring is provided on the outer side of the inductive coupling coil.

[0007] Preferably, the structure has a step, and a fastening ring threadedly matched with the structure is provided on the structure, and the shielding magnetic ring is located between the fastening ring and the step.

[0008] Preferably, the shielding magnetic ring is composed of a plurality of coaxial sub-ring bodies.

[0009] Preferably, the material of the shielding magnetic ring is manganese-zinc ferrite.

[0010] Preferably, an insulator is provided between the inductive coupling coil and the structure.

[0011] Preferably, the insulator is made of ceramic.

[0012] Preferably, the structure includes a rod body and an insulating cover, wherein: an axially arranged channel and one end of the rod body is provided inside to form an oxygen channel; the insulating cover is installed at one end of the rod body and blocks the port of the oxygen channel, and the insulating cover is provided with a through hole connected to the oxygen channel to form an oxygen inlet; the cutting nozzle is fixed to the end of the rod body away from the insulating cover.

[0013] Preferably, a channel coaxial with the oxygen channel is provided inside the rod body and on the inner side of the oxygen channel to form a fuel gas channel.

[0014] Preferably, the insulating cover is provided with a through hole, and the end of the gas channel away from the cutting nozzle passes through the through hole and extends to the outside of the insulating cover to form an extension part. The outer wall of the extension part is provided with a thread, and the extension part is provided with a nut that cooperates with the thread to fix the insulating cover on the rod body.

[0015] In the present invention, an induction coupling coil is arranged on the outside of the structure, and the structure of the induction coupling coil is arranged so that after the radio frequency power is connected, the fuel gas and oxygen can be quickly preheated, thereby greatly increasing the cutting temperature, accelerating the cutting speed, and improving the work efficiency. The structure is simple and portable, and it is particularly suitable for thick plate cutting, accident rescue, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the external structure of a radio frequency heating gas cutting gun proposed for the invention;

[0017] Figure 2 A schematic diagram of the internal structure of a radio frequency heated gas cutting gun proposed for the invention. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is described in detail below through specific embodiments.

[0019] like Figure 1-2 As shown, Figure 1 A schematic diagram of the external structure of a radio frequency heating gas cutting gun proposed for the invention; Figure 2 A schematic diagram of the internal structure of a radio frequency heated gas cutting gun proposed for the invention.

[0020] Reference Figure 1-2 The present invention provides a radio frequency heating gas cutting gun, comprising: a structure 1 having a gas channel a and an oxygen channel b inside, and a cutting nozzle 2 installed on the structure 1 and connected to the gas channel a and the oxygen channel b, wherein:

[0021] An inductive coupling coil that can be connected to a radio frequency power source is provided on the outside of the structure 1. The inductive coupling coil includes a tube body 3 made of conductive material and wound around the outer periphery of the structure 1. One end of the tube body 3 is connected to the gas channel a, and the other end is used to connect to the gas source to form a gas inlet c.

[0022] During operation, the inductive coupling coil is supplied with a radio frequency current of 13.56MHz, generating radio frequency heating in the oxygen channel b and the fuel gas channel a, so that the oxygen and fuel gas are heated after being passed in, and the heated gas burns at the cutting nozzle 2 to generate a high-temperature airflow to cut the workpiece.

[0023] As can be seen from the above, the present invention arranges an inductive coupling coil on the outside of the structure 1 and arranges the structure of the inductive coupling coil so that after it is connected to the radio frequency power supply, the fuel gas and oxygen can be quickly preheated, thereby greatly increasing the cutting temperature, accelerating the cutting speed, and improving the work efficiency. The structure is simple and portable, and it is particularly suitable for thick plate cutting, accident rescue, etc.

[0024] In addition, in this embodiment, a shielding magnetic ring 4 is provided outside the inductive coupling coil. The shielding magnetic ring 4 is made of manganese zinc ferrite and is composed of a plurality of coaxial sub-rings; an insulator 6 is provided between the inductive coupling coil and the structure 1, and the insulator 6 is made of ceramics to ensure safety in use.

[0025] In this embodiment, the structure 1 has a step, and a fastening ring 5 is provided on the structure 1 which is threadedly matched with the step. The shielding magnetic ring 4 is located between the fastening ring 5 and the step, so that the shielding magnetic ring 4 can be fixed between the step and the fastening ring 5 by means of the fastening ring 5. The arrangement of this structure facilitates the disassembly, assembly and replacement of the shielding magnetic ring 4.

[0026] In this embodiment, the structure 1 includes a rod body 11 and an insulating cover 12, wherein: an axially arranged channel and a through channel at one end is provided inside the rod body 11 to form an oxygen channel b; the insulating cover 12 is installed at one end of the rod body 11 and blocks the port of the oxygen channel b, and the insulating cover 12 is provided with a through opening connected to the oxygen channel b to form an oxygen inlet d; the cutting nozzle 2 is fixed to one end of the rod body 11 away from the insulating cover 12.

[0027] In this embodiment, a channel coaxial with the oxygen channel b is provided inside the rod body 11 and located on the inner side of the oxygen channel b to form a gas channel a. A through opening is provided on the insulating cover 12, and the end of the gas channel a away from the cutting nozzle 2 passes through the through opening and extends to the outside of the insulating cover 12 to form an extension portion, the outer wall of the extension portion is provided with a thread, and the extension portion is provided with a nut 7 that cooperates with the thread to fix the insulating cover 12 on the rod body 11. The arrangement of this structure is convenient for maintenance.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A radio frequency heating gas cutting gun, characterized in that: include: A structure (1) having a gas channel (a) and an oxygen channel (b) inside, and a cutting nozzle (2) mounted on the structure (1) and connected to the gas channel (a) and the oxygen channel (b), wherein: An inductive coupling coil that can be connected to a radio frequency power source is provided on the outside of the structure (1), and the inductive coupling coil comprises a tube (3) made of a conductive material and wound around the outer periphery of the structure (1), one end of the tube (3) is connected to the gas channel (a), and the other end is used to connect to a gas source to form a gas inlet (c); During operation, radio frequency current is passed through the inductive coupling coil, generating radio frequency heating in the oxygen channel (b) and the fuel gas channel (a), so that the oxygen and fuel gas are heated after passing through, and the heated gas burns at the cutting nozzle (2) to generate a high-temperature airflow to cut the workpiece.

2. The radio frequency heating gas cutting gun according to claim 1, characterized in that: A shielding magnetic ring (4) is provided on the outer side of the inductive coupling coil.

3. The radio frequency heating gas cutting gun according to claim 2, characterized in that: The structure (1) has a step, and a fastening ring (5) threadably matched with the structure (1) is provided on the structure (1), and the shielding magnetic ring (4) is located between the fastening ring (5) and the step.

4. The radio frequency heating gas cutting gun according to claim 2, characterized in that: The shielding magnetic ring (4) is composed of a plurality of coaxial sub-ring bodies.

5. The radio frequency heating gas cutting gun according to claim 2, characterized in that: The material of the shielding magnetic ring (4) is manganese-zinc ferrite.

6. The radio frequency heating gas cutting gun according to claim 1, characterized in that: An insulator (6) is provided between the inductive coupling coil and the structure (1).

7. The radio frequency heating gas cutting gun according to claim 6, characterized in that: The material of the insulator (6) is ceramic.

8. The radio frequency heating gas cutting gun according to any one of claims 1 to 7, characterized in that: The structure (1) comprises a rod body (11) and an insulating cover (12), wherein: an axially arranged channel and one end of the channel is provided inside the rod body (11) to form an oxygen channel (b); the insulating cover (12) is installed at one end of the rod body (11) and blocks the end of the oxygen channel (b); the insulating cover (12) is provided with a through hole communicating with the oxygen channel (b) to form an oxygen inlet (d); and the cutting nozzle (2) is fixed to one end of the rod body (11) away from the insulating cover (12).

9. The radio frequency heating gas cutting gun according to claim 8, characterized in that: A channel coaxial with the oxygen channel (b) is provided inside the rod body (11) and on the inner side of the oxygen channel (b) to form a fuel gas channel (a).

10. The radio frequency heating gas cutting gun according to claim 9, characterized in that: The insulating cover (12) is provided with a through opening, and an end of the gas passage (a) away from the cutting nozzle (2) extends through the through opening to the outside of the insulating cover (12) to form an extension portion, the outer wall of the extension portion is provided with a thread, and the extension portion is provided with a nut (7) that cooperates with the thread to fix the insulating cover (12) on the rod body (11).

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